Object: A set of wrenches that graduate in size with one of them missing.

Good morning, boys and girls. I brought a gift with me that I received for Christmas. I have always wanted a set of these and this gift really made me feel good. (Show them the set of wrenches.) Do you know what these are called? (Let them answer.) That's right, wrenches. Do you know what they are used for? (Let them answer.) That is very good. You use them to tighten or loosen bolts or nuts on machinery or wood. They are very useful. As you can see, I have one of every size. You need them to be of every size because things that they work on come in different sizes. Do you see what I see? (See if they notice the fact that one of them is missing.) One of them is missing. That mak…